The bastion Saint-André, designed following plans by Vauban in the late 17th century, is now home to the Archaeology Museum, which houses all the collections gathered during various excavations in the city and the surrounding waters. A precious past resuscitated, through the wrecks of Etruscan, Greek, Phoenician and Roman ships driven here by storms: ceramics, amphorae, mosaics, coins and everyday objects attest to the extraordinary prosperity of the powerful Roman 'Civitas Antipolitana.'
References:Visby Cathedral (also known as St. Mary’s Church) is the only survived medieval church in Visby. It was originally built for German merchants and inaugurated in 1225. Around the year 1350 the church was enlarged and converted into a basilica. The two-storey magazine was also added then above the nave as a warehouse for merchants.
Following the Reformation, the church was transformed into a parish church for the town of Visby. All other churches were abandoned. Shortly after the Reformation, in 1572, Gotland was made into its own Diocese, and the church designated its cathedral.
There is not much left of the original interior. The font is made of local red marble in the 13th century. The pulpit was made in Lübeck in 1684. There are 400 graves under the church floor.